Long-range-interacting topological photonic lattices breaking channel-bandwidth limit

Gyunghun Kim; Joseph Suh; Dayeong Lee; Namkyoo Park; Sunkyu Yu

doi:10.1038/s41377-024-01557-4

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Long-range-interacting topological photonic lattices breaking channel-bandwidth limit

Original Articles

- Long-range-interacting topological photonic lattices breaking channel-bandwidth limit
- Light: Science & Applications Vol. 13, Issue 10, Pages: 2367-2375(2024)
- Affiliations：
  
  1.Department of Electrical and Computer Engineering, Intelligent Wave Systems Laboratory, Seoul National University, Seoul 08826, Korea
  2.Department of Electrical and Computer Engineering, Photonic Systems Laboratory, Seoul National University, Seoul 08826, Korea
- Author bio：
  
  Namkyoo Park (nkpark@snu.ac.kr)
  Sunkyu Yu (sunkyu.yu@snu.ac.kr)
- Funds：
- DOI：10.1038/s41377-024-01557-4
  CLC：
- Published：31 October 2024，
  
  Published Online：02 September 2024，
  
  Received：04 February 2024，
  
  Revised：16 July 2024，
  
  Accepted：25 July 2024
- Accepted：
Scan QR Code
Kim, G. et al. Long-range-interacting topological photonic lattices breaking channel-bandwidth limit. Light: Science & Applications, 13, 2367-2375 (2024).
DOI：

Kim, G. et al. Long-range-interacting topological photonic lattices breaking channel-bandwidth limit. Light: Science & Applications, 13, 2367-2375 (2024). DOI： 10.1038/s41377-024-01557-4.

摘要

Abstract

The presence of long-range interactions is crucial in distinguishing between abstract complex networks and wave systems. In photonics

because electromagnetic interactions between optical elements generally decay rapidly with spatial distance

most wave phenomena are modeled with neighboring interactions

which account for only a small part of conceptually possible networks. Here

we explore the impact of substantial long-range interactions in topological photonics. We demonstrate that a crystalline structure

characterized by long-range interactions in the absence of neighboring ones

can be interpreted as an overlapped lattice. This overlap model facilitates the realization of higher values of topological invariants while maintaining bandgap width in photonic topological insulators. This breaking of topology-bandgap tradeoff enables topologically protected multichannel signal processing with broad bandwidths. Under practically accessible system parameters

the result paves the way to the extension of topological physics to network science.

关键词

Keywords

references

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